PhysOrg Posted July 23, 2014 Share Posted July 23, 2014 Migratory songbirds are disappearing, and though conservationists are examining several possible reasons such as climate change, loss of habitat, acid rain and light pollution, a key piece of the puzzle has remained missing: where do these birds go once they leave their breeding sites, and what threats may they be encountering along the way? Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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